！！！！！！此報錯應該是伺服器和servlet專案的  jdbc  載入失敗，所以針對專案目錄結構，把所有可以新增library的地方都載入了這個

！！！！！！！同時將此jar檔案拷貝到Tomcat的目錄資料夾Bin：

最後解決問題的是當我把jar檔案複製到這目錄下，才解決：

com.mysql.jdbc.Driver at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.j

Could not load java.net.BindException.  The eventual following stack trace is caused by an error thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access, and has no functional impact.
java.lang.IllegalStateException
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1600)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
at com.mysql.jdbc.CommunicationsException.<init>(Communi

特此記錄！